afaik if you did s-off and you're on GB firmware, you need the ENG Hboot to flash recoveries using fastboot commands, otherwise you have to use PH98IMG.zip's... but that's just what i see, i'm not 100%.
Current Phones: CDMA Galaxy Nexus (Toro)
Roms: Carbon, Xperience, AOKP, Liquid Smooth (most recent)
Kernel: Lean Kernel, AK Cylon or Franco (most recent)
Radios: FK01 / FK02 (4.2.2)
HTC Rezound (Backup Phone)
Droid 2 / 3
HTC Droid Incredible